Saturation carrying capacity at high archimedes number of vertical concurrent gas-particle flow

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	Saturation carrying capacity at high archimedes number of vertical concurrent gas-particle flow
	Xu, Guangwen ; Hartge, Ernst-Ulrich ; Werther, Joachim ; Gao, Shiqiu
刊名	CHEMICAL ENGINEERING SCIENCE
	2006-11-01
卷号	61 期号:21 页码:7115-7124
关键词	saturation carrying capacity choking circulating fluidized bed column diameter influence
ISSN号	0009-2509
其他题名	Chem. Eng. Sci.
中文摘要	The existing literature data on the saturation carrying capacity G(S)* for vertical concurrent gas-particle flow are limited to Archimedes numbers Ar below 1000. By experimental measurement and dimensionless analysis the present article extended Ar to 2500 to demonstrate how G(S)* varies with gas velocity under these high Ar values. The obtained result revealed that G(S)* is subject to the same kind of correlation with as velocity irrespective of Ar. The degree that G(S)* depends on gas velocity, however, generally decreases with raising Ar and it tends to be a constant when Ar becomes higher than 530. This shows in fact that the flows with heavy/large particles or dense/viscous gas possess a low increase in particle-carrying capability with increasing gas velocity until a steady specific capability per m/s is reached at Ar of 530. The article also reanalyzed the influence of column diameter on G(S), demonstrating that the column diameter influence exists only in small columns and for flows with heavy/large particles. The influence is negligible in commercial conveying columns and differs according to Ar in those small columns employed in laboratory studies. All of these findings resulted in an upgraded correlation for G(S), which manifested not only wide applicability to flows in differently sized columns and with Ar of up to 2500 but also better accuracy in the mentioned flow conditions when comparing with several other literature correlations. (c) 2006 Elsevier Ltd. All rights reserved.
英文摘要	The existing literature data on the saturation carrying capacity G(S)* for vertical concurrent gas-particle flow are limited to Archimedes numbers Ar below 1000. By experimental measurement and dimensionless analysis the present article extended Ar to 2500 to demonstrate how G(S)* varies with gas velocity under these high Ar values. The obtained result revealed that G(S)* is subject to the same kind of correlation with as velocity irrespective of Ar. The degree that G(S)* depends on gas velocity, however, generally decreases with raising Ar and it tends to be a constant when Ar becomes higher than 530. This shows in fact that the flows with heavy/large particles or dense/viscous gas possess a low increase in particle-carrying capability with increasing gas velocity until a steady specific capability per m/s is reached at Ar of 530. The article also reanalyzed the influence of column diameter on G(S), demonstrating that the column diameter influence exists only in small columns and for flows with heavy/large particles. The influence is negligible in commercial conveying columns and differs according to Ar in those small columns employed in laboratory studies. All of these findings resulted in an upgraded correlation for G(S), which manifested not only wide applicability to flows in differently sized columns and with Ar of up to 2500 but also better accuracy in the mentioned flow conditions when comparing with several other literature correlations. (c) 2006 Elsevier Ltd. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	CIRCULATING FLUIDIZED-BED ; CHOKING ; VELOCITY ; DEPENDENCE ; DILUTE
收录类别	SCI
原文出处	://WOS:000241446700022
语种	英语
WOS记录号	WOS:000241446700022
公开日期	2013-10-24
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/4066]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China 2.Tech Univ Hamburg, Dept Chem Engn, D-21071 Hamburg, Germany 3.Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Xu, Guangwen,Hartge, Ernst-Ulrich,Werther, Joachim,et al. Saturation carrying capacity at high archimedes number of vertical concurrent gas-particle flow[J]. CHEMICAL ENGINEERING SCIENCE,2006,61(21):7115-7124.
APA	Xu, Guangwen,Hartge, Ernst-Ulrich,Werther, Joachim,&Gao, Shiqiu.(2006).Saturation carrying capacity at high archimedes number of vertical concurrent gas-particle flow.CHEMICAL ENGINEERING SCIENCE,61(21),7115-7124.
MLA	Xu, Guangwen,et al."Saturation carrying capacity at high archimedes number of vertical concurrent gas-particle flow".CHEMICAL ENGINEERING SCIENCE 61.21(2006):7115-7124.